JPS5760956A - Negative pressure type booster - Google Patents
Negative pressure type boosterInfo
- Publication number
- JPS5760956A JPS5760956A JP55136460A JP13646080A JPS5760956A JP S5760956 A JPS5760956 A JP S5760956A JP 55136460 A JP55136460 A JP 55136460A JP 13646080 A JP13646080 A JP 13646080A JP S5760956 A JPS5760956 A JP S5760956A
- Authority
- JP
- Japan
- Prior art keywords
- input column
- booster
- negative pressure
- piston
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Actuator (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Abstract
PURPOSE: To improve functional reliability of the captioned booster by modifying the structure around the input column, and preventing adverse effect on the seating condition between the valve seat and the poppet valve of built-in control valve mechanism due to shaking of the input column.
CONSTITUTION: The space within front and rear shells 1, 2 of the negative pressure type booster is divided into a permanently negative pressure chamber 6 and a variable pressure chamber 7 by means of a booster piston 4. An input column 22 which is connected to the above piston 4 is also connected t a control valve mechanism B. The booster power is provided through a power column 17 due to the pressure difference between chambers 6 generated at the time when the input column moves forward. Here, the top end 22a of the input column 22 is formed spherical so that it can slide and float along the inner wall of an insert hole 23 of the piston 4, and this top end 22a is slidingly attached to No.1 valve seat 29 of the control valve mechanism B. Thus, adverse effect to shaking input column 22 on the sealing condition of No.1 valve seat 29a and a poppet valve 31 is avoided.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55136460A JPS5760956A (en) | 1980-09-30 | 1980-09-30 | Negative pressure type booster |
US06/304,937 US4469008A (en) | 1980-09-30 | 1981-09-23 | Negative pressure type booster arrangement |
GB8129374A GB2087015B (en) | 1980-09-30 | 1981-09-29 | Mechanically operating vacuum boosters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55136460A JPS5760956A (en) | 1980-09-30 | 1980-09-30 | Negative pressure type booster |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5760956A true JPS5760956A (en) | 1982-04-13 |
JPS628338B2 JPS628338B2 (en) | 1987-02-21 |
Family
ID=15175625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55136460A Granted JPS5760956A (en) | 1980-09-30 | 1980-09-30 | Negative pressure type booster |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5760956A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6240302U (en) * | 1985-08-30 | 1987-03-10 |
-
1980
- 1980-09-30 JP JP55136460A patent/JPS5760956A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6240302U (en) * | 1985-08-30 | 1987-03-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS628338B2 (en) | 1987-02-21 |
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